ARDSLEY ADVISORY PARTNERS LP
CIK 900529 · Holdings on Jun 30, 2026 · First reported Jul 13, 2026
Top ten holdings
Q2 2026- SNDK6.15%
- AMD5.87%
- SEZL4.01%
- WULF2.57%
- BTSG2.46%
- EBAY2.42%
- RUN2.32%
- VIAV2.02%
- P1.99%
- ARM1.80%
Share classes counted separately31.61%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- AMDWeight increased · +5.62 pp0.25% → 5.87%Shares +85.00K (+1062.50%)
- UTHRWeight decreased · -2.76 pp4.52% → 1.76%Shares -20.00K (-40.00%)
- SNDKWeight increased · +2.08 pp4.07% → 6.15%Shares -17.00K (-40.48%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 25
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | SNDKSANDISK CORP View history and evidence | $56.69M | 6.15% | 25.00K shares | 4.07% → 6.15%+2.08 pp -17.00K (-40.48%) | Reduced | ▾ |
| 02 | AMDADVANCED MICRO DEVICES View history and evidence | $54.02M | 5.87% | 93.00K shares | 0.25% → 5.87%+5.62 pp +85.00K (+1062.50%) | Added | ▾ |
| 03 | SEZLSEZZLE INC View history and evidence | $36.90M | 4.01% | 215.00K shares | 2.89% → 4.01%+1.12 pp -85.00K (-28.33%) | Reduced | ▾ |
| 04 | WULFTERAWULF INC View history and evidence | $23.69M | 2.57% | 966.00K shares | 2.30% → 2.57%+0.27 pp -84.00K (-8.00%) | Reduced | ▾ |
| 05 | BTSGBRIGHTSPRING HEALTH SERVICES View history and evidence | $22.67M | 2.46% | 325.00K shares | 2.27% → 2.46%+0.19 pp -25.00K (-7.14%) | Reduced | ▾ |
| 06 | EBAYEBAY INC View history and evidence | $22.26M | 2.42% | 201.00K shares | 1.95% → 2.42%+0.47 pp +60.50K (+43.06%) | Added | ▾ |
| 07 | RUNSUNRUN INC View history and evidence | $21.41M | 2.32% | 1.60M shares | 2.34% → 2.32%-0.02 pp +465.00K (+40.97%) | Added | ▾ |
| 08 | VIAVVIAVI SOLUTIONS INC View history and evidence | $18.62M | 2.02% | 390.00K shares | 2.03% → 2.02%-0.01 pp -10.00K (-2.50%) | Reduced | ▾ |
| 09 | PEVERPURE INC-ACL A View history and evidence | $18.30M | 1.99% | 233.00K shares | Prior unavailable +233.00K | New | ▾ |
| 10 | ARMARM HOLDINGS PLC-ADRSPONSORED ADS View history and evidence | $16.62M | 1.80% | 47.00K shares | 0.41% → 1.80%+1.39 pp +29.00K (+161.11%) | Added | ▾ |
Options overlay 15
$39.14M notionalPut and Call positions are separate. Notional is based on underlying securities, not option premium, market value or net exposure. Quantities are underlying shares.
| Security | Put / Call | Underlying shares | Notional | Quantity change | |
|---|---|---|---|---|---|
BKDBROOKDALE SENIOR LIVING INC View history and evidence | Call | 690.00K | $11.10M | 0 (0.00%) | ▾ |
ORCLORACLE CORP View history and evidence | Call | 45.00K | $6.59M | +45.00K | ▾ |
FCELFUELCELL ENERGY INCCOM NEW View history and evidence | Call | 125.00K | $4.50M | +125.00K | ▾ |
3 / 15 options · preview only
Exited positions 74
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| SPY SS SPDR S&P 500 ETF TRUST-US | Call | -49,000 | -$31.87M | SEC filing ↗ | SEC filing ↗ |
| ANET ARISTA NETWORKS INC | Non-derivative | -173,700 | -$21.33M | SEC filing ↗ | SEC filing ↗ |
| META META PLATFORMS INC-CLASS A | Non-derivative | -28,000 | -$16.02M | SEC filing ↗ | SEC filing ↗ |
3 / 74 preview exits. Up to 30 exit records are previewed. Exit means absent from the current filing; execution date, price and proceeds are unknown.
Every number has a source.
CIK 900529 · Period 2026-06-30
Data loaded 2026-09-23 · First reported 2026-07-13
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 960211633
}Research all 145 reported holdings.
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